def del_(d):
    try:
        for i in range(len(d)-1,-1,-1):
            if d[i]=='':del d[i]
            elif '' in d[i]:del d[i]
        res=d
    except Exception as e:res=d
    return res

print(del_('*'))
print(del_(None))
print(del_([["", 'erqw'], ['rewqrqw'], '']))
print(del_("create_time"))